Update(06/12) : My Issue got resolved and got back my coins. Got the response from support team that the issue is due to network problems for ETH and not from exchange. Observed similar problems on other exchanges as well and it seems the issue is not with Cryptopia alone. The same transacion Id which I was not able to find it earlier, now i am able to see it in etherscan.io

2. My ETH withdrawai is in processing status for last 6 hours ..Hmm..

Update (06/12) : Looks like the issue is with ETH nettwork and not with cryptopia. Let me wait for sometime.